It's popular. But comparing to WebStorm it really falls behind. The most important problem I had is that it does not support debugging node clusters. Any app with several node workers cannot be debugged. Another pitfall is that it fails with many popular loggers and you simply have no access to logging during debug time. Last but not least, debugging again, it fails many times with breakpoints on transpiled and source mapped, where Jetbrains got it right. It's my quick editor replacing sublime or notepad++, but when it comes to heavy lifting I'm in favor of Webstorm.